package 实践.class_01;

import java.util.Scanner;

public class Demo3 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        String temp = sc.next();
        int b = sc.nextInt();
        switch (temp) {
            case "+":
                System.out.println(a+b);
                break;
            case "-":
                System.out.println(a-b);
                break;
            case "*":
                System.out.println(a*b);
                break;
            case "/":
                System.out.println(a/b);
                break;
            default:
                System.out.println("Invalid");
        }
        
    }
}
